The BC557B is a PNP bipolar junction transistor with a collector base voltage rating of 50V and a collector emitter voltage rating of 45V. It has a maximum operating temperature of 150°C and a minimum operating temperature of -55°C. The transistor is packaged in a TO-92 case and is mounted through a hole. It is RoHS compliant and has a power dissipation of 500mW.
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| Package/Case | TO-92 |
| Collector Base Voltage (VCBO) | 50V |
| Collector Emitter Voltage (VCEO) | 45V |
| Emitter Base Voltage (VEBO) | 5V |
| Frequency | 150MHz |
| Max Operating Temperature | 150°C |
| Min Operating Temperature | -55°C |
| Mount | Through Hole |
| Number of Elements | 1 |
| Packaging | Tape and Reel |
| Polarity | PNP |
| Power Dissipation | 500mW |
| RoHS Compliant | Yes |
| Voltage | 45V |
| RoHS | Compliant |
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